full ground war and that is largely seen as a warning to the peace negotiations going on, inside of cairo, to either have a cease-fire treaty signed sometime in the next 24 hours or there will be tanks rolling across these fields, into gaza. chris, back to you. >> chris: leland vittert reporting live from the israel-gaza border. thanks for that. joining us now, two leading senators on national security issues. saxby chambliss, vice chair of the intelligence committee an joe lieberman, head of the homeland security committee. senators, before we get to the benghazi investigation i want to ask you both about the growing conflict between israel and the palestinians in gaza. senator lieberman, while israel clearly has to be able to defend itself, do you worry about a ground war in gaza, especially, in the changing post-arab spring middle east? >> well, obviously it is in the first instance to hamas, i don't think the israelis really want a ground war. they'll go into gaza if they feel they need to, to eliminate the remainder of the missiles, and a lot of which are supplied to hamas by iran, t